کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
638373 | 883711 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation and pervaporation properties of crosslinked hyperbranched poly(amine-ester) membranes Preparation and pervaporation properties of crosslinked hyperbranched poly(amine-ester) membranes](/preview/png/638373.png)
Crosslinked hyperbranched poly(amine-ester) (HPAE) membranes were prepared by crosslinking its terminal hydroxyl groups with glutaraldehyde (GA). The crosslinked HPAE membranes showed high reactivity and good hydrophilicity. The crosslinking degree was investigated by Fourier transformation infrared spectra (FT-IR). Atom force microscope (AFM) and scanning electron microscope (SEM) reveals that the crosslinked HPAE films have smooth surfaces, dense and homogenous matrices. The swelling degree of the membrane was higher in water than that in isopropanol. From the permeation of pure water through the HPAE membrane, the effect of hydroxyl/aldehyde group ratio on the permeation flux and separation factor was investigated. The results indicated that the permeation flux increase was accompanied with the separation factor decrease if the water concentration increased in the feed solution.
Journal: Journal of Membrane Science - Volume 307, Issue 2, 15 January 2008, Pages 292–298